Leaf for ledgers, &amp;c.



No. 656,l|9. Patented Aug. l4, I900.

H. P. JONES. LEAF FOR LEDGEBS, an.

(Application filed Jan. 18, 1900.)

(No Model.)

THE Nmmls pzrzns c0. Pncro-uwo" WASHINGTON, 0. cc.

UNITED STATES ATENT FFIGE HARVEY P. .IONES, OF CHICAGO, ILLINOIS, ASSIGNOR TC THE JONES PER- PETUAL LEDGER COMPANY, OF SAME PLACE;

LEAF FOR LEDGERS, 8w.

SPECIFICATION forming part of Letters Patent No. 656,119, dated August 14, 1900.

Application filed January 13, 1900. Serial No. 1,338. (No model.)

To ctZZ whom it may concern:

Be it known that I, HARVEY P. J ONES,a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, haveinvented a new and useful Improvement in Leaves for Ledgers, &c.,-of which the following is a specification.

My invention consists in an improved sheet or leaf for ledgers and other books of a like nature, and my object is to provide an improved construction wherein the leaf is weakened in an improved manner over an area of bending near its binding-margin to cause the leaves to lie flat when the book is opened at any portion. 7

In books of the character mentioned the leaves are of quite stiff glazed or sized paper, and I accomplish my purpose, preferably, by cutting or otherwise forming narrow parallel grooves near the binding edge of the sheet and extending from near the top to near the bottom of the sheet, a marginbeing preserved at the upper and lower ends of said grooves to prevent the leaves from tearing.

In the accompanying drawings, Figure l is a face View of a sheet or leaf of the improved construction; Fig. 2, an enlarged section on line 2 of Fig. 1; Fig. 3, a fragmentary view of a modified construction; Fig. 4, an enlarged section taken on line 4 of Fig. 3; Fig. 5, a fragmentary view of a still further modifica tion, and Fig. 6 an enlarged section taken on line 6 of Fig. 5.

A represents the improved leaf or sheet, and a narrow grooves separated from each other by short spaces a and extending parallel to the binding edge of the sheet from near the top of the sheet to near the bottom thereof. A rear margin 1) is preserved for binding the sheets, and upper and lower margins c are preserved to prevent tearing. The glazing is indicated in the cross-sections by the heavy upper and lower lines, and in the formation of the grooves a the glazing on one side of the paper is destroyed throughout the area of said grooves. In practice I am able to form the grooves at a single operation.

In Fig. 1 I have shown a detachable leaf of a perpetual ledger; but it is obvious that the present invention has no relation to the manner in which the leaves are bound into book form.

In Figs. 3 and 4 I have shown the sheet provided with a single groove (1, which is of sufficient area to make the leaf pliable over the struction of the body of the paper and without weakening the upper and lower margins of the sheets. I am aware that leaves of this character are in use which are provided throughout the area of bending with perforations for weakening the paper, and also that it has been proposed to crease the leaf, parallel to the rear edge, from the extreme upper edge to the lower edge throughout the area of bending. Both of these constructions have disadvantages, however, and the latter I regard as wholly impracticable, while the former is not only liable to tearing, but also when the sheet is bout it presents aroughened surface. As indicated, it is essential to my construction that the glazing on one side of the sheet shall be materially weakened over the bending area without destroying the body of the paper, and this end is best attained by making the grooves of substantial width, as shown.

What I claim as new, and desire to secure by Letters Patent, is-

1. A leaf for ledgers, 850., comprising a sheet of paper glazed upon both sides and having the glazing on one side out in continuous lines parallel to the binding edge and extending from an intact upper margin to a similar lower margin, the sheet being left imperforate throughout the area of bending, substantially as and for the purpose set forth.

2. A leaf for ledgers, 850., comprising a sheet of paper glazed upon both sides and having grooves of substantial width cut parallel to the binding edge and producing a weakened area of bending, upper and lower margins being preserved intact to prevent the leaf from tearing and the sheet remaining imperforate throughout the area of bending, substantially as and for the purpose set forth.

3. A leaf for ledgers, &o., comprising a sheet of glazed paper provided on one of its surfaces with continuous parallel grooves a located near the binding edge of the leaf and preserving margins c at the top and bottom,

said grooves being of less depth than the 10 thickness of the paper and destroying the glazing on one side of the paper throughout the area of bending, substantially as and for the purpose set forth.

HARVEY P. JONES. In presence of W. G. J ONES, E. R. J ONES. 

